Motor-control device.



H. S. VALENTINE. MOTOR CONTROL DEVICE. APPLIOATION FILED MAY 1a, 1913.

1,102,459. Patented July 7, 1914,

2 SHEETS-SHEET 1.

FYGJ- THE NORRIS PETERS CO. FHOTO-LITHO.v \VASHINGTON, D. C

. H. s. VALENTINE.

MOTOR CONTROL DEVICE.

APPLICATION FILED MAY 16, 1913.

1,102,459, Patented July 7, 1914.

2 SHEETS-SHEET 2.

FIG 2 O 3m 20 fl 7 awwmtoz THE NORRIS PETERS CO. PHOTO-LITHO.. WASHINGTON. D. Cv

STATES PATENT OFFICE.

HERBERT S. VALENTINE, READING, PENNSYLVANIA, ASSIGNOR TO READING CRANE AND HOIST WORKS, OE READING, PENNSYLVANIA.

MOTOR-CONTROL DEVICE.

Specification of Letters Patent.

Patented July *7, 1914.

Application filed May 16, 1913. Serial No. 767,983.

To all whom it may concern:

Be it known that I, HERBERT S. VALnN- rrnn, a citizen of'the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Motor- Control Devices, of which the following is a specification.

My invention particularly relates to motor controllers such as are used on traveling cranes in which hoisting mechanism is suspended from a traveling carriage adapted to traverse an elevated trackway.

The principal object of my invention is to provide a controller device, comprising two separate motor controllers having independently actuated contact mechanism for the separate motors, provided with a single blow-out coil, which is so disposed with respect to said contact mechanism as to be economically utilized by both, and whereby a maximum magnetic field is afforded.

My invention embodies a controller provided with manual actuating means comprising handles or wheels, each having a universal jointed connection with the mechanism for separately controlling the motors.

Figure 1 is a front elevational view showing my improved controller device and its connection with a motor. Fig. 2 is a sectional view taken transversely through the controller. Fig. 3 is a side view of the controller.

The numeral 20 designates a support for suitably sustaining the controller casing.

The numeral 37 designates a plate by which the motor or motors may be suspended. I

The numeral 49 designates one of a pair of jaws which frictionally embrace the brake drum 51 on the shaft 39, and which are provided with suitable springs, not shown, to force them into engagement with the drum.

The bearing block 52 also forms a support for the hanger 61, which is provided at its lower end with a bearing 62 for the rock-shaft 63. Said shaft 63 carries at one end a lever G l having oppositely extended arms respectively connected by links 65 and 66 with the free extremities of the jaws 4C9.

\ The other end of the rock-shaft 63 carries a lever 67, the free end of which is connected by the link 68 to the yoke-plate 69, which is provided with a slot, the walls of which embrace the controller shaft 70 and maintain said plate 69 and the parts connected therewith in operative alinement.

The yoke-plate 69 is substantially triangular and is provided with a pair of rollers 74: journaled thereon upon opposite sides of the plane of the major aXis of the slot, and arranged to traverse the edge of the cam 7 5, which is carried by the controller shaft 70 and rotated therewith when the controller is actuated to direct electric current from the electric conductors through the motor 38. The cam 7 5 is symmetrical upon opposite sldes of a medial plane, and therefore its rotation in either direction will instantly effect an upward movement of the yokeplate 69 and the parts connected therewith, and consequently effect the mechanical re lease of the brake of the motor 38, while the contacts of the controller are approaching to close the circuit through said motor, The controller shaft- 70 is provided with a miter gear 76, which is in mesh with the miter gear 7 7 on a shaft which is ournaled in the bearing frame 80 projecting from the controller casing 71. This shaft carries the bifurcated head 81, to which is pivotally connected the bifurcated head 82 on the shaft 83 of the hand-wheel 8%, by the link 85, the pintles 86 and 87 forming the pivotal connection between said link and the respective heads, being disposed in planes normal to each other. The construction thus described provides a universal joint connection between the hand-wheel and the controller shaft, whereby the operator may actuate and release the brake from whatever position it may be most convenient for him to cause the hand-wheel to assume.

Referring now to the controller structure as shown in Fig. 2., it will be seen that the parts are of well-known and usual design, the stationary contacts 87 and 88 of the controllers for the respective motors being supported to engage their respective rotary contacts 89 and 90 when the controller cylinders are actuated to close the circuit through said motors. It will be observed that the blow-out coil 91 is disposed between the separate controller mechanisms, and is common to both,- thus utilizing the mechanism of the one when the other is actuated, to form a field of maximum capacity. The manual actuation of the controller mechanism for the one motor is substantially identical with that of the other, the shaft 92 being provided with the miter gear 93 meshing with the miter gear 94, whose shaft carries the bifurcated head 96 pivotally connected with the bifurcated head 97 of the shaft 98 of the hand-wvl1eel 99, by the link 100.

Referring to Fig. 3, the shafts 70 and -92 are limited in their rotative movement and automatically returned to their inoperative position by means of a disk or plate 101, which is carried by the respective shafts and provided with a radially extending lug 102, which is arranged to engage the pin 103 projecting from the controller casing, said shafts each being encircled by a coiled spring 104, the opposite ends beingcrossed and turned into planes substantially tangent to diametrically opposite sides of their respective shafts, and respectively extended upon opposite sides of the pins 105 and 106, the former projecting from said plate 101 and the latter projecting from said controller casing. It will be obvious that when either shaft is rotated from its normally inoperative position, shown in the drawings, for instance, in a clock-wise direction, the left-hand end 108 of the spring 104 will be retained, while the right-hand end 109 will be carried around by the pin 105, the rotation being limited by the edge 110 of the lug 102 engaging the pin 103, the tension of the spring 101 tending to return the shaft to its normal position when released.

Having thus described my invention, I claim:

1. In a device of the character described, a controller device comprising two separate motor controllers located adjacent each other and contained in a single casing, and a common blow out coil so located aS to afford a maximum magnetic field for quenching the sparks on each controller.

2. In a device of the character described, a motor controller comprising separately actuated mechanisms, each inclu ing a horizontal shaft, a miter gear mounted on the shaft, a vertical shaft having a miter gear in mesh with the gears on the shafts, bifurcated head pieces on both the horizontal and vertical shafts which head pieces are pivotally connected in pairs, means for rotating the vertical shafts to actuate the control mechanisms, and a common blow out coil for both mechanisms.

In testimony whereof I aflix my signature in presence of two witnesses.

HERBERT S. VALENTINE.

WVitnesses:

En. A. KELLY, CLARA E. YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C." 

